Table 4.

Logistic regression analysis for independent predictors of BMD Z-scores of ≤−1.

Variables	OR (95% CI)	p-Value
Age	1.14 (0.95–1.37)	0.16
Cobb	1.02 (0.998–1.03)	0.09
Gender
Girl	1
Boy	2.43 (1.32–4.48)	0.005
BMI Z-score	0.54 (0.45–0.66)	<0.001
Laboratory values
Alkaline phosphatase, U/L	1.008 (1.004–1.012)	<0.001
Total bilirubin, umol/L	0.99 (0.95–1.04)	0.68
Potassium, mmol/L	0.37 (0.17–0.79)	0.01
Phosphorus, mmol/L	0.75 (0.18–3.13)	0.70